Jabra C250 EarWave Boom Headset for 2.5mm Plugs (Discontinued by Manufacturer) Unique noise-cancelling microphone reduces background noise so your voice stands out more your voice stands out more and listening quality is optimised by the high sensitivity miniature speaker and Jabra MiniGel which channel sound into your ear Contoured earpiece fits discreetly behind either ear for a comfortable and secure fit Answer/end button is positioned on the microphone boom Superb comfort